What kind of gun is it,.....and how much u want for it like it is?

I wish there was a way I could make the choke split and then it would let free

I have had two stuck and eventually got them both out.

Tried heat, brake cleaner, penetrating oil... everything... Soaked it, all that.. Even took one of them to a gunsmith and he said sorry nothing I can do either. Nothing worked.

I had given up on it basically, but then I tried liquid wrench one day just for fun/last resort thing. It popped right out. I think it worked because it made it cold. I had sprayed the barrell really good and noticed as i was backing it out that it was really cold.

Heat expands metal, cold contracts it.

Heat does work for some things and I have seen it work in other situations, but for this have not seen it work. Even know someone that bent the barrell heating it and trying to crank it out.

The dry ice thing sounds really promising...

Good luck.

Bring it to a gunsmith and pay for him to remove it without damaging anything in the process...